Electric vibrator



Sept. 30 1924.

G. DE CAlROS-REGO ELECTRIC VIBRATOR Filed April 27. 1921 FIG" I.

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Patented Sept. 30, 1924.

' UNITED STATES GEORGE DE CAIROS-REGO, OF SYDNEY, NEW SOUTH WALES, AUSTRALIA.

ELECTRIC} VIBRATDR.

Application filed April 27 1921. Serial No. 464,939.

To all whom it may concern Be it known that I, Gnonen on CAIROS- Reno, a subject of the King of Great Britain, residing at Sydney, in the State of New South Wales and Commonwealth of Australia have invented new and useful Elec trio vibrators, of which the following is a specification.

This invention relates to a new and improved electric vibrator having an electromagnet and an armature so mounted as to induce, when current is passing through the instrument, mutually reciprocal motion, the object of the invention being to provide a device of this character which is not only of great value as a therapeutic instrument in massage treatment, but is capable of a vari= ety of other uses, such, for instance, as the treatment of violins and similar musical instruments for producing greater responsiveness or flexibility.

The novel vibrator comprises an electromagnet and vibrating plate of metal and preferably of springy steel; The vibrating plate which is not so flexible as to be readily attracted or drawn to the electro-magnet is clamped 01 fastened atone end within a suitable yoke or back so as to form the armature of the electroanagnet which is affixed to one leg of and Within a U shaped frame or band both ends of Which are also fastened to said back one being adjustable inwardly and outwardly thereof, so that the magnet may be regulated in relation to the armature by slightly drawing in said end or letting it out. And this leg carries an adjusting screw controlling a contact spring secured to said back and projecting within said frame and within contact distance of another contact projecting from the extension of said back constituting a make and break. Suitable terminals for electrical leads from a source of electrical energy say a battery or other generator are provided on the back, the circuit being through the coils of the electro-magnet, thence through the U frame or a lead to the make and break and back to the source of energy. I

If desired the make and break springs may be removably affixed, being carriedby a removable block adapted to fit into complcmentary slots in the back and so that one spring will contact with a keeper or slot contact on the projection of the back and in circuit with theelectrical energy and the other;

spring will be in contact with the U frame;

Upon the inner face of thefixed leg of the U frame and adjustable inwardly and outwardly of the back is a regulating blockto adjust as desired the flexibility 0r rigidity of such frame which should offer a greater resistance to movement than the armature and in relation to the armature'the lower contact soring should possess a higher frequency tian that adopted for the vibration of the armature.

I have found that, while the range of frequency of vibrations of the armature may vary considerably, a satisfactory-frequency of vibration can be secured by a plate of springy steel about 1% inches wide of an inch thick and of a vibrating length of from 3 to 4 inches. l

A cover of suitable material say thin metal may be and preferably is provided and is affixed to the back enclosing the parts but with the free end of the armature protruding therethrough.

For convenientuse in massage or therapeutics said free end is adapted to carry an ordinary imparting cushion generally of rubber and in the form of a cup which is applied as ordinarily to the part of the body to be massaged or treated, 1

, For convenience in manipulating the vibrator, a handle is affixed to the other side of the yoke or back and has a central passage for electrical leads. v

For the purpose of preventing the vibrator travelling"? when vibration is being imparted to violins and like instruments the vibrator is preferably balanced upon a supporting cushion or cup preferably of rubber aiiixed to the leg of the U frame carrying the electromagnet or to the cover when there is one. i

It isconvenient to; make the yoke or back of non conducting material say wood and the U frame or band of metal, say alu n'iinium, which may 'be ribbed or fdished longitudinally for strength though such fran'ie may be made of thin wood or other material and if such be non-conducting it is then necessaryto provide a lead from the clectro-imignet to: the make and break.

In order that .a practical-application' of the invention may be readily :understood' the same willn'ow be .describedmwith reference to" the accompanying 'c lra-wings inYwhich Figure 1 is alo'ngi'tudinah sectional "elevation of a vibrator constructed in accordance with the present. inventioin Figure 2. is. a; back end elevation. thereotl with the" handle removed; Figure 3 is a plan View of. the U frame before bending with the positions of the electro-magnet and regulating block being indicated in dotted lines; Figure 4. is a plan view of the vibrating plate or armature; Figures 5 and: 6 are respectively a side and a front elevation of a section of theloackg: and Figure 7 is: a side elevation of the removable block carrying the make and break springs;

To the back. I preferably of non-conducting material, say wood, and having clamping bolts (3 therethrongh with nuts 7 and pi-e tembly a: handle- 8 with leads passage 9- is clamped or alii-ved the vibrating plate or armature 10 which isfurther clamped: within an inward projection 11 from the back 5 by bolts 12 insulated from the armature. Said projection carries thecontact spring 13 which isin con-tact with one or both of the fastening bolts 12- insulated from the armature 1. and connected to a lead 14: from the battery Also.- aflieiedl to the back is the U frame 1-5 having. one end 16 fast with a resistance or regulating block 17 slidably adjustable thereon and retained in position by bolt 18 through the back and ha=ving onits protruding end nut 19. Saidframe passes through slot 20 in the armature and has its other end adjust-ably. afiixed to the back 5 by atongue 21 taking through an orifice 22' in said back 5' and: having on its protruding endnut 23.

On and within said- U frame is affixed the e1ectro-magnet 24 in circuit with one lead 25 say through binding post 26 and With said frame 15 by lead 27 and by said frame 1 5' with spring contact 28 in contact with said frame andcl almped Within the back 5 and projecting inwardly therefrom to above the contact spring 153 where it is adjusted or con-trolled by set screw 29 pref erably iii an insulated seat 30 affixed to the frame 15-. v

lVlrenthe make and break springs: 28 and- 13 are to be removable they are carried by a: removable metal block consisting of upper section 38 having orifice for the tongue 21 of the U frame 15 and lower section 39- insulated from one another material 40* andhe-ld together by pins or dowels 41 of non-conducting material. The spring 13) carries thereon a contact piece or filler 42 to engage with the slot contact and keeper 43 on the projection 11 of theback 5 as the block is pushed into position through slot 44iin. the back Said keeper is in circuit with the electrical energy and is larger than the thickness of the spring 13 to allow.

for clearance of the contact point thereon. The other spring 2'8 is in contact with the U frame 15 through the upper section 39 of the block which receives the tongue 21 of said frame when the block is placed in. position. This block is firmly gripped and retained in place as the nuts 7 are tightened on the bolts 6.

Enclosing the parts is a cover 31 fastened to the back 5 in any convenient manner and having end slot 32 through which the free end 33 of the armature 1O protrudes.

For use in massage there is rcmovably aflixed to said end 33 by means of a suitable extension, either straight or angular, as 3'4, anordinary im 'iarting or mntact cushion 315 or other desired applicator or impartcr, and for convcnicm-e in applying vibration. to a violin or like. instrument and preventing the vibrator travelling, an imparting or contact cushion 236 is ailixed to the exterior of the cover 31. at about the point of balance.

The circuit from the source of electrical energy indicated at 37 is to the electromagnct 24- through the frame 15 thence through the make and break 28 and 13 back to the source 37.

In use the circuit being completed by connecting the leads 1i and :25 to a source of electrical energy 37 and adjusting the make and break. 28 and 13 by the screw 29 the electro-magnet 24. being energized exerts its force upon and sets in motion the armatm'e 10, which, although resilient, yct is suliiciently still? to somewhat resist such force and induces a recipro-al motion of the magnet towards it by which motion the frame 15 and the screw 30 are moved. the spring contact 28 eventually passing from the range of the spring contact 13 whereupon the circuit is broken and the frame regains its normal position when the contact 28 being pressed towards the contact 13 the circuit is again closed with like effect the continuation of which intermittent action keeps up the vibrations of the frame 15- and also the armature 10 which vibrations may be imparted to an article by resting the vibrator thereon. by means of th cushion 36 or such vibrations are imparted toa body or surface to bev treated by moving the cushion 35 on the armature 10' on. said body or surface the cushion providing a smooth flexible contact and smooth transmission of the \llJl'fl-iiiOllS.

I claim 1. An electric vibrawi', comprising an clectromagnet, contact devices for closing an electric circuit through said magnet, a vibratory armature in the field of the magnet, and means for imparting to the magnet a vibratoiy movement relative to said armature when current passes through the magnet.

2. An electric vibrator. comprising a flexible frame, an electromagnet 'arricd by said frame, contact devices for closing an electric circuit through said magnet, a vibratory armature in the field of the magnet, said frame and armature being adapted to vibrate in unison When current passes through the magnet thereby to alternately open and close the contact devices.

3. An electric vibrator comprising a back, aflexible frame extending therefrom, an electro-magnet on said frame in circuit with electrical energy through make and break devices consisting of a spring contact projecting from said back and an adjustable spring contact projecting from said back, said devices adapted to be operated by moven'ient of said frame, and a stiff vibrating armature extending from said back Within and protruding through said frame and set in the field of the electro-magnet.

4. An electric vibrator comprising a back, a flexible frame extending therefrom, an electro-magnet on said frame in circuit With electrical energy through make and break devices consisting of a spring contact and an adjustable spring contact projecting from a removable section of said back, said devices adapted to contact with parts or contacts in circuit with the electrical energy and to be operated by n'lovelijient of said frame, and a stiffvibrating armature extending from said back Within and protruding through said frame and set in the field of the electro-magnet.

5.111 an electrical vibrator having an electro-n'lagnet and an armature, a flexible frame carrying said electro-magnet, make and break devices independent of and insulated from the armature and comprising a spring in circuit With one pole of energy and an adjustable spring in circuit through the electro-magnet With the other pole of energy and operated by movement of said flexible frame.

(3. An electric vibrator, comprising an electroamignet, means for energizing said magnet, a vibratory armature in the field of the magnet, a resilient support for said magnet, said armature being adapted to induce a vibratory movement of said support thereby to reciprocate the magnet toward and from the armature, and circuitclosing means actuated by the vibration of said support to open the circuit through said magnet.

Dated this seventh day of March, A. D.

GEORGE on CAIROS-REGO. 

